C - Chemistry – Metallurgy – 07 – D
Patent
C - Chemistry, Metallurgy
07
D
402/33, 260/241.
C07D 233/18 (2006.01) C08G 18/64 (2006.01) C08G 59/40 (2006.01) C08G 73/10 (2006.01) C08G 73/14 (2006.01)
Patent
CA 1224463
ABSTRACT OF THE DISCLOSURE "IMPROVED POLYIMIDE PRODUCTS" Novel polyimide products of general formula II (n=2 to 20, each R=H or a group effective to block further reactions by diamines) are incapable of further polymerisation with diamines, but are useful starting materials for reaction with other polyfunctional reagents such as diepoxides to form interesting new resins. Image II
465408
Riemer Pierce W.f.
Robinson Joseph G.
Coal Industry (patents) Limited
Fetherstonhaugh & Co.
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